Update the rest of the blast resistance values

The values have been updated according to this list:

https://minecraft.gamepedia.com/Module:Blast_resistance_values

mods/ITEMS/mcl_cocoas/init.lua

@@ -111,7 +111,7 @@ local crop_def = {
 	},
 	sounds = mcl_sounds.node_sound_wood_defaults(),
 	on_rotate = false,
-	_mcl_blast_resistance = 15,
+	_mcl_blast_resistance = 3,
 	_mcl_hardness = 0.2,
 }